四分律行事鈔資持記 2.926

2.926

二中。《十誦》兩開；通夜坐者，同下《五分》。《母論》兩宿，由無去處，開坐免過。注中初夜，即第四夜初。此戒初夜，本合犯提；論家開坐，故不即犯；及至將明，還制互去；若一向開，何須令去。準下注中，必須四夜通坐方開。此兩節注，似斥古非；有謂等四夜坐，開無犯故；雖不明指，語意可見。

In the second part: The Daśādhyāya-vinaya has two exceptions; sitting through the night is the same as the Mahīśāsaka-vinaya below. The Vinayamātṛkā says that for two nights, because there is nowhere to go, sitting is permitted to avoid the fault. In the note, "early night" refers to the beginning of the fourth night. In this precept, the early night should originally incur a pāyattika; the treatise masters permit sitting, so it is not immediately violated; but when daybreak approaches, they still prohibit it and require one to leave; if it were permitted unconditionally, why would they require leaving? In accordance with the note below, one must sit through all four nights before it is permitted. These two notes seem to repudiate an ancient error, where some claimed that sitting on the fourth night was permitted without violation; although not explicitly pointed out, the intention of the words is clear.